Carpenter&#39;s hinge-gage.



A. HELFANT.

CABPENTERS HINGE GAGE.

APPL |CAT|0N FILED MAY 26. I915.

2 SHEETS-SHEET l.

III/11111001111115 a 6 INVENTEIR I ?/W1/ Patented Apr. 18, 1916.

AT-rumusrs A. HELFANT.

CARPENTER'S HINGE GAGE.

APPLICATION FILED MAY 26. 1915.

1,179,723. Patentd Apr. 18, 1916 2 SHEETS-SHEET 2.

ATTElRNEYE-s.

ARON HELFANT, OF BUFFALO, NEW YORK.

CABPENTERS HINGE-GAGE.

' Specification of Letters Patent.

Patented Apr. 18, 1916.

Application filed May 26, 1915. Serial No. 30,503.

To all whom it may concern Be it known that I, ARON HELFANT, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Carpenters Hinge-Gages, of which the following is a specification.

This invention relates to a carpenters gage for facilitating the accurate cutting of the hinge-mortises of doors, windows and the like.

It is the object of my invention to produce an inexpensive device of this character, which can be readily adjusted to gage hingemortises of different dimensions.

Inthe accompanying drawings: Figure 1 is a perspective view of the gage as applied to a door, which latter is'shown in dotted lines. Fig. 2 is a transverse vertical section of the same, showing a mortise cut in the door. Fig. 3 is a top plan viewofa modified form of my invention. Fig. 4 is a transverse vertical section on line 4-4, Fig. 3. Fig. 5 is a top plan view of another modification of the device. Fig.6 is a transverse vertical section on line 6-6, Fig. 5. Fig. 7 isa, fragmentary perspective view of a door jamb having the usual rabbet, showing the use of the gage plate and marker. Fig. 8 is a similar view of a door jamb withouta rabbet, showing the use of the gage plate and marker. Fig. 9 1s" a similar view of a door and the gage plate andmarker, showing the manner of taklng the measurement of the door-mortise, preparatory to marking the jamb-mort1se.

,{Similarcharacters of reference indicate corresponding parts throughout the several views.

Referring to Figs. 1 and 2, l and'l indicate a pair of clamps adapted to embrace the edge of a door 2 or other part to which hinges are to be applied, such as a sash. These clamps are provided with clamping screws 3 which engage one side of the door,

and opposing lugs or jaws 4 which engage the opposite side thereof. Carried by a bracket'or rearward extension 5 of each.

'faces of the clamps form gage-walls against which a chisel is placed for cutting the ends of the mortise,"while the platform serves as ai -est for the chisel in gaging and cutt ng the mortise to the proper depth. At its rear edge, the chisel-rest has a depending flange 7 through which pass thumb screws 8 which engage screw threaded openings in the adjacent ends of the brackets 5. The chisel-rest is provided in its front edge, near one end, with a notch or seat 9 adapted to receive the neck 10 of the clamp 1, while the opposite end portion of the rest is provlded with a series of similar notches or seats 11 adapted to receive the neck 10 of the other clamp 1 The depending flange 7 is provided with a series of openings 12 which register with the notches 11 of the rest and one or another of which is adapted to receive the right hand thumb screw 8. By this series of notches 11 the clamp 1*, upon removing the last-named screw from its bracket 5, can be readily adjusted toward or from the clamp 1, the screw being replaced in the appropriate opening 12 to again secure the clamp in position. The notches 11 and holes 12 are arranged at different predetermined distances from the notch 9and may be graduated to fractions of an inch, so that the clamp 1* may be adjusted to gage hinge-mortises of different lengthsp To prevent upward displacement of the front portion of the chisel-rest on the clamps, the necks of the latter are provided in their rear edges with notches 13 which receive the notched front edge of the chiselrest, as best shown in Fig. 2. d

For the purpose of gaging the depth of the mortise, the clamps are provided with ad ustable gage-stops preferably consisting with reference to said edge, the depth of the mortise being greater or less according as the rest is lowered or raised.

The breadth of the mortise is gaged by a suitable gage plate andmarker 15. This plate is provided at its longitudinal edges with oppositely-bent flanges 16, 17 the outer corners of which-are preferably provided with markers or scoring-spurs 18 for a purpose hereinafter described. When this plate is used to gage the width of a doormortise, it is clamped between the door and the clamping screws3 with its flange resting against the edge of the door, as best shown in F g 2.- In th posi i n, the inner dge of said flange forms a gage-against which the chisel is placed to cut the mortise to the proper width. The plate serves not only as a gage for this purposebut also asa protective covering for the door, which prevents marring thereof by the clamping screws. j

It will now he understood that in the 'use of this device, for example to cut a hingemortise in a door, the carpenter first places the adjustable clamp l in the notch 11 corresponding to the length of the desired mortise, securing the clamp in position by its thumb screw 8. The gage plate is next applied to the door'and the clamps are passed over the edge of the door, after which the set screws 14, are adjusted to locate the chisel-rest 6 the proper distance below the edge of the door, and finally, the clamping screws 3 are tightened. By placing the chisel against the four gage-faces formed by the inner sides of the clamps, the chiselrest and the flange 17, the mortise can be quickly and squarely cut in an obvious manner,-insuring the accurate attachment of the hinge and the proper hanging of the door.

In addition to the spurs 18 the gage plate 15 is preferably provided on itsflange 16 with a longitudinally adjustable gage bar 19 adapted to cooperatewith the spurs 18 of said flange. In the construction shown, this bar is secured to said flange by a screw stud 20 passing through a longitudinal slot 21 in the flange 16 and a nut 22 engaging with the stud. This bar and the spurs enable the gage plate to be used for the additional purpose of gaging or measuring hinge-mortises for door jambs. v

, In the'case of a door jamb 40 having the usual stop-41, as shown in Fig. 7-, the-gage plate is placed with its body portion against that edge of the stop nearest the mortise to becut, and its flange l7 againstthe jamb. The plate is then slid along the stop to draw or score the gage-line 41*, which defines the inner wall of the mortiseto be cut. Y In the case of a door-jamb havingno stop, as shown in Fig. 8, the measurement for the .breadth, of the mortise is takenfrom that of the door, previously mortised (Fig. 9), by placing the gage-plate transversely against the door withthe spur 18 of the flange 16 in register with the inner wall of the doormortise, as shown in the last-mentioned figure, and then adjusting the gage-bar 19 to bring its opposing end against the side of the door. The gage plate is then reversed end for end and transferred to the doorjamb 42 with the last-mentioned end of its gage bar 19 bearing against the side of the j amb, as shown in Fig. 8, and the gageplate is moved along the side of t'he'jamb ,to cause the spur or marker to draw the gage line L3. v The mortise in the doorthus corresponds exactly to the mortise in the jamb.

Referring to Figs. 3 and 4, which show a modified form of the invention, the chiselr'e'st or platform 23 is provided near one end with front and rear notches or seats 24, 25, adapted to receive respectively the neck of. the clamp 1 and an upwardly-projecting lug 26 of the bracket 27, .ofsaid' clamp.

The opposite end portion of the chisel-rest other modification of the invention, the

chisel-rest 33 is provided at one end with a notch 34 adapted to receive the neck of the clamp 1?,while the opposite end portion of the rest is provided'with a series of similar notches 35 arranged atTpredetermined distances from the notch. '34 and adapted to receive the neck of. the other 'clampl which is adjustable toward and from the first-named clamp, as in the constructions previously described. The parts are held together by means of screws 36 en tering openings 37 in the chisel-rest and screw-threaded openings 38in the brackets '39 of the clamps. In this construction, the

brackets 39 may be 'shortenthan the width of the chisel-rest.

By the use of this improveddevicejhinge mortises can not only be cut with absolute accuracy,-but an important saving in time is effected.

I claim as myinvention arpe r forming gage-members, a chisel-rest carried by said clamps, said clamps being mounted on said rest and adjustable relatively toeach other to vary thedistance between them,

andwmeans for holding the clamps in posi- 'tionon the rest.

, 2. A' carpenters gage, comprising a pair of clamps adapted to embrace the edge of a door and having brackets, said clamps v, s a pr adapted to embrace the edge of a door and forming gage-members, and a chisel-rest' mountedon said brackets, one of said clamps being adjustableton said rest relatively to the other clamp.

3. A carpenters gage, comprising a pair of clamps adapted to embracethe edge of a door and carrying brackets, a chisel-rest mounted on said brackets, .said rest having a longitudinal series of seats adapted to receive a member of one of said clamps, and; means for removably retaining said clampmember in one or another of said seats.

4. A carpenters gage, comprising a pair of clamps adapted to embrace the edge of a door and having brackets, a chisel-rest mounted on said brackets and provided at its front edge with notches and at its rear edge with a flange, said clamps engaging a pair of said notches, and means for securing said flange to said brackets.

5. A carpenters hinge gage, comprising a" pair of clamps adapted to embrace the edge of a door and having brackets, a chisel-rest mounted on said brackets, said rest being provided in its front edge With notches adapted to receive the necks of said clamps, the neck of each clamp having a notch interlocking with said rest to prevent vertical displacement thereof .on the clamps, and means for retaining the clamps in the notches of said rest.

6. A carpenters gage, comprising a pair of clamps adapted to embrace the edge of a door, a chisel-rest carried by said clamps, said clamps being relatively adjustable on said rest, and a gage-plate adapted to be interposed between said clamps and the door on the side opposite that at Which the chisel-rest is located, said plate having a gage-flange arranged to rest against the edge of the door.

7. A carpenters gage, comprising a pair of clamps adapted to embrace the edge of a door, a chisel-rest mounted on said clamps, and gage-screws carried by the yokes of said clamps and adapted to bear against the edge of the door for determining the position of the chisel-rest relative to said edge.

ARON HELFANT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

